>>> welcome to nhk world "newsline." >>> barack obama has some unfinished business. the u.s. president says the hard work of millions of americans has not been rewarded and he says it's time to reunite the engine of economic growth. he promised to work on behalf of the middle class in his state of the union address. >> it is our unfinished task to restore the basic bargain that built this country, the idea that if you work hard and meet your responsibilities, you can get ahead, no matter where you come from, no matter what you look like or who you love. >> obama made the address before a joint session of congress. he said his first priority is making the country a magnet for new jobs in manufacturing. he said some of those jobs could come through investment and clean energy. he said the extreme weather americans have seen should remind them they need to do more to combat climate change. obama said america will remain the anchor of strong alliances around the world, as he outlined threats from abroad. he criticized north korean leaders a day after they carried out another nuc

underground nuclear test. korean central television report scientists used a smaller warhead than in previous tests but produced a more powerful explosion. >> translator: on february 12, 2013, our defense and science officials successfully conducted our third nuclear test at an underground experiment site. >> seismologists in several countries defected a tremor emanating from north korea. experts from japan's meteorological agency say the tremor measured 5.2 in magnitude and was not natural. it happened just before noon local time close to poongkye-ri. military leaders issued a statement last month, threatening to target what they called a sworn enemy of the korean people, the united states. u.s. representatives led the drive at the u.n. to expand sanctions. security council passed a resolution last month condemning the north koreans for launching a rocket in december. >> translator: the nuclear test was carried out as part of our efforts to protect our security and independence. it is aimed at responding to the ferocious and hostile act of the u.s. to block our right to legitimately and peac

faster than other devices iran is using. the nuclear watchdog says that iran has so far refined 280 kilograms of uranium to a fissile purity of 20%. the iaea reports that 167 kilograms of the uranium could be used to develop nuclear weapons if iran has the technology to enrich it to more than 90% purity. this new assessment is likely to intensify criticism of iran among western nations. representatives of five permanent u.n. security council member nations and germany are due to hold talks with iran next week in kazakhstan concerning its nuclear program. >>> researchers in japan report a significant discovery in the fight against alzheimer's disease. they say they've identified part of the mechanism behind the pathology. the scientists used induced stem cells also known as ips cells that can be programmed to develop into any type of cell. associate professor haruhisa inoue leads the project at kyoto university for cell research and application. his team reprogrammed cells taken from four alzheimer's patients. they turned them into ips cells to produce brain nerve cells. the research

government to discuss the matter and clearly show us the results as soon as possible. >> authorities in tokyo and osaka have started to provide pollution data online. >>> naval officers from mainly asian pacific countries have gathered in japan to discuss security it is aimed at promoting mutual understanding in the region. on monday 15 officers took part in an opening ceremony at japan's maritime staff college in tokyo. they represent 15 countries, including japan, the u.s., south korea, china, and australia. the director of the college's research department says he hopes they can discuss each nation's participants and a way to building a regional security framework. he also commented on china's presence at the event. >> translator: china's participation has great significance, considering the timing of the meeting. >> relations have soured over a territorial dispute. china denies the clang. >>> experts with japan's nuclear regulator have thrown another wrench into plans to put power plants back online. officials have been looking at six complexes to see if they're stable. they found the one

and north korea sent a twitter message from pyongyang saying she was using the service. earlier this year, north korea allowed people to bring their own mobile phones into the country. pyongyang watchers say these moves could be an attempt to attract more visitors from abroad and improve foreign currency by improving telecommunications infrastructure. however, north korean residents are still not allowed access to such service. >>> officials in pyongyang are playing host to an athlete who gained a reputation as a bad boy. dennis rodman was known as much for his tenacity on the court as for his antics off it during 14 seasons in the national basketball association. now he is making a tv documentary in north korea. rodman arrived on tuesday a production team in tow. officials from the north korean olympic committee gave him a warm welcome. >> my first time. i think most of these guys first time here. so, hopefully we are going to be okay and hope the kids to have a good time for the game. >> rodman is expected to play some basketball during his visit. he will also run workshops for children

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